Table 2.

Evaluation of daytime and night symptoms of asthma.

Grading	Daytime symptom score of asthma	Night symptom score of asthma
0 point	Asymptomatic	Asymptomatic
1 point	Few symptoms and short duration	Wake up once or early
2 points	Short symptoms ≥2 times	Wake up twice, including early
3 points	Many times mild symptoms in day, little impact on life and work	Wake up many times
4 points	Many times serious symptoms in day, impact on life and work	Cannot sleep at night
5 points	The symptoms were so severe that the subjects could not work and live normally